CH139688A - Process for the preparation of a nitrogenous vat dye. - Google Patents
Process for the preparation of a nitrogenous vat dye.Info
- Publication number
- CH139688A CH139688A CH139688DA CH139688A CH 139688 A CH139688 A CH 139688A CH 139688D A CH139688D A CH 139688DA CH 139688 A CH139688 A CH 139688A
- Authority
- CH
- Switzerland
- Prior art keywords
- mol
- preparation
- works
- dye
- nitrogenous
- Prior art date
Links
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines stiekstoffhaliigen Küpenfarbstoffes. . Im Hauptpatent ist ein Verfahren zur Darstellung eines stickstoffhaltigen Küpen- farbstoffes beschrieben,
bei dem man 1 Mol. des durch Behandlung von Pyranthron mit Halogen in Chlorsulfonsäure erhältlichen Tetraha.logenpyranthrons mit 3 Mol. des durch Nitrieren von Dibenzanthron mit Sal petersäure in Nitrobenzol und Reduktion der entstandenen Nitroverbindung erhältlichen Aminodibenzanthrons und 1 Mol. 1-Amino- a.nthrachinon umsetzt.
Es wurde nun gefunden, dass man einen neuen Küpenfarbstoff erhält, wenn man 1 Mol. Trihalogenanthrachinonbenzacridon von der Formel:
EMI0001.0023
mit 1 Mol. 1-Aminoanthrachinon und 2 Mo.l. 1-Amino -5- benzoylanuino, -8- methoxyanthra- chinon umsetzt.
Die Kondensation führt man zweckmässig in hochsiedenden Verdünnungs- mitteln und; unter Zusatz von säurebindenden Mitteln, wie Natriumacetat, aus. Vielfach ist es von Vorteil, Katalysatoren, beispiels- weise Kupferverbindungen, zuzusetzen.
Der neue Farbstoff löst sich in konzen trierter Schwefelsäure mit ohver Farbe und gibt mit alkalischer Hydrosulfitlösung eine braune Küpenlösung, aus der die pflanz liche Fa,-er in violettgrauen, hervorragend echten Tönen gefärbt wird.
Beispiel: 4,3 Teile Triehloranthrachino@nbenzacri-, don werden in 100 Teilen Nitrobenzol mit 2,3 Teilen 1-Aminoa@nthrachino.n, 6,8 Teilen 1-Amino -5- benzoylaminoi -8= methoxyanthra- chinon, 5 Teilen Natriumacetat und 2 Teilen Kupferoxyd so, lange unter Rühren gekocht, bis die Farbstoffbilldung beendet ist. Hier- auf arbeitet man das Reaktionsprodukt in der üblichen Weise auf.
Process for the preparation of a strong vat dye. . The main patent describes a process for the preparation of a nitrogen-containing vat dye,
in which 1 mol. of the Tetraha.logenpyranthrons obtainable by treating pyranthrone with halogen in chlorosulfonic acid with 3 mol. of the aminodibenzanthrone obtainable by nitrating dibenzanthrone with nitric acid in nitrobenzene and reducing the resulting nitro compound and 1 mol. 1-Amino- a. nthraquinone converts.
It has now been found that a new vat dye is obtained if 1 mole of trihalogenanthraquinone benzacridone of the formula:
EMI0001.0023
with 1 mol. 1-Aminoanthraquinone and 2 Mo.l. 1-Amino -5- benzoylanuino, -8- methoxyanthraquinone converts.
The condensation is expediently carried out in high-boiling diluents and; with the addition of acid-binding agents such as sodium acetate. It is often advantageous to add catalysts, for example copper compounds.
The new dye dissolves in concentrated sulfuric acid with an overt color and, with an alkaline hydrosulfite solution, gives a brown vat solution from which the vegetable color is dyed in violet-gray, exceptionally real shades.
Example: 4.3 parts of Triehloranthrachino @ nbenzacri-, don are in 100 parts of nitrobenzene with 2.3 parts of 1-Aminoa@nthrachino.n, 6.8 parts of 1-Amino -5- benzoylaminoi -8 = methoxyanthraquinone, 5 parts Sodium acetate and 2 parts of copper oxide are boiled with stirring until the dye has formed. The reaction product is then worked up in the usual way.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139688X | 1927-10-18 | ||
CH138317T | 1928-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139688A true CH139688A (en) | 1930-04-30 |
Family
ID=25713139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139688D CH139688A (en) | 1927-10-18 | 1928-10-01 | Process for the preparation of a nitrogenous vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139688A (en) |
-
1928
- 1928-10-01 CH CH139688D patent/CH139688A/en unknown
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